Fix NPE when there are two repositories which only differ in case

Sascha Vogt

2014-06-18 396e9bb50d7eca0d96da2c5fc5177a22f78d30b7

 src/main/java/com/gitblit/GitBlitServer.java

@@ -198,7 +198,9 @@
            e.printStackTrace();
         } finally {
            try {
               is.close();
               if (is != null) {
                  is.close();
               }
            } catch (IOException e) {
               e.printStackTrace();
            }